#include<iostream>
#include<vector>
#include <utility>
using namespace std;
struct hehe1
{
    int operator()(int a,int b)
    {
        return a + b;
    }
};

int main()
{
    vector<int> arr = {333,3,6};//内置类型用这个方法初始化
    vector<string> arr2= {"66666","55555"};
    vector<pair<int,int>> arr1= {{3,3},{6,5}};
    hehe1()(1,2);
    return 0;
}